Wyoming Snow Precipitation Update
United States Natural Resources Water and Climate Center
Department of Conservation Portland, Oregon
Agriculture Service
S N O W - P R E C I P I T A T I O N U P D A T E
Based on Mountain Data from NRCS SNOTEL Sites
As of TUESDAY: DECEMBER 31 , 2013
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BASIN ELEV. SNOW WATER EQUIVALENT TOTAL PRECIPITATION
Data Site Name (Ft) % %
Current Median Median Current Average Avg
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WYOMING
SNAKE RIVER
BASE CAMP 7030 8.3 7.1 117 9.3 9.9 94
BLACK BEAR 8170 16.3 17.5 93 16.3 17.7 92
BLIND BULL SUM 8650 10.0 9.0 111 8.4 9.2 91
COTTONWOOD CREEK 7670 8.4 8.3 101 9.9 11.0 90
EAST RIM DIVIDE 7930 5.3 4.3 123 5.2 5.4 96
GRAND TARGHEE 9260 20.7 17.5 118 15.0 14.7 102
GRANITE CREEK 6770 6.0 6.4 94 7.4 9.3 80
GRASSY LAKE 7265 12.2 12.5 98 14.1 16.8 84
GROS VENTRE SUMMIT 8750 6.3 6.1 103 5.9 6.1 97
GUNSIGHT PASS 9820 7.3 6.0 122 7.2 6.4 112
LEWIS LAKE DIVIDE 7850 10.1 13.1 77 12.7 16.6 77
PHILLIPS BENCH 8200 9.7 10.8 90 10.7 12.7 84
SALT RIVER SUMMIT 7760 4.8 4.8 100 6.7 7.4 91
SNAKE RIVER STATION 6920 6.5 6.2 105 8.9 10.9 82
SPRING CREEK DIVIDE 9000 9.0 10.0 90 9.5 10.7 89
THUMB DIVIDE 7980 5.5 6.1 90 6.3 8.7 72
TOGWOTEE PASS 9580 11.2 11.0 102 10.8 11.4 95
TWO OCEAN PLATEAU 9240 13.7 12.4 110 11.4 12.5 91
WILLOW CREEK 8380 10.9 10.6 103 14.4 15.4 94
YOUNTS PEAK 8350 -M 7.0 * -M 7.6 *
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Basin Index (%) 101 89
MADISON-GALLATIN
BLACK BEAR 8170 16.3 17.5 93 16.3 17.7 92
CANYON 7870 5.0 5.3 94 6.6 7.8 85
MADISON PLATEAU 7750 8.6 10.2 84 10.0 12.2 82
WEST YELLOWSTONE 6700 4.7 4.6 102 5.7 7.0 81
WHISKEY CREEK 6800 6.0 6.5 92 7.9 9.6 82
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Basin Index (%) 92 86
YELLOWSTONE
BEARTOOTH LAKE 9360 10.3 9.9 104 8.8 9.1 97
BURNT MTN 5880 4.0 1.8 222 9.7 6.7 145
CANYON 7870 5.0 5.3 94 6.6 7.8 85
COLE CREEK 7850 8.4 6.3 133 6.4 6.3 102
EVENING STAR 9200 14.2 11.2 127 14.8 13.1 113
FISHER CREEK 9100 15.3 14.5 106 13.8 14.8 93
NORTHEAST ENTRANCE 7350 4.4 4.0 110 5.3 6.1 87
PARKER PEAK 9400 12.0 9.7 124 11.3 8.4 135
SYLVAN LAKE 8420 9.5 9.1 104 11.5 11.1 104
THUMB DIVIDE 7980 5.5 6.1 90 6.3 8.7 72
TWO OCEAN PLATEAU 9240 13.7 12.4 110 11.4 12.5 91
WHITE MILL 8700 11.5 9.8 117 9.8 11.2 88
WOLVERINE 7650 5.8 4.7 123 5.6 6.2 90
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Basin Index (%) 114 99
WIND RIVER
BURROUGHS CREEK 8750 -M 6.2 * -M 7.7 *
CASTLE CREEK 8400 3.1 -M * 4.9 -M *
COLD SPRINGS 9630 4.8 3.1 155 6.6 4.9 135
DEER PARK 9700 5.2 6.6 79 6.9 8.7 79
HOBBS PARK 10100 6.4 6.5 98 6.1 6.1 100
KIRWIN 9550 7.1 4.3 165 6.2 5.6 111
LITTLE WARM 9370 5.7 4.4 130 6.9 6.1 113
OWL CREEK 8975 3.7 2.5 148 3.6 2.9 124
SOUTH PASS 9040 5.7 6.6 86 5.9 8.2 72
ST. LAWRENCE ALT 8620 2.9 3.0 97 5.4 4.3 126
TOGWOTEE PASS 9580 11.2 11.0 102 10.8 11.4 95
TOWNSEND CREEK 8700 3.2 4.1 78 4.6 5.8 79
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Basin Index (%) 107 98
BIGHORN BASIN
BALD MTN. 9380 11.0 8.3 133 9.0 7.8 115
BEAR TRAP MEADOW 8200 4.6 2.5 184 5.4 4.2 129
BONE SPRINGS DIV 9350 8.1 7.2 112 6.6 7.1 93
GRAVE SPRINGS 8550 5.1 3.3 155 6.1 5.1 120
KIRWIN 9550 7.1 4.3 165 6.2 5.6 111
MARQUETTE 8760 4.4 -M * 5.9 -M *
MIDDLE POWDER 7760 7.0 4.9 143 6.8 6.0 113
OWL CREEK 8975 3.7 2.5 148 3.6 2.9 124
POWDER RIVER PASS 9480 6.0 4.7 128 6.2 5.9 105
SHELL CREEK 9580 7.5 7.2 104 6.3 6.5 97
TIMBER CREEK 7950 3.4 2.1 162 4.8 3.9 123
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Basin Index (%) 135 111
SHOSHONE RIVER
BLACKWATER 9780 12.2 10.4 117 10.0 9.8 102
EVENING STAR 9200 14.2 11.2 127 14.8 13.1 113
MARQUETTE 8760 4.4 -M * 5.9 -M *
SYLVAN ROAD 7120 5.8 5.3 109 9.2 8.9 103
YOUNTS PEAK 8350 -M 7.0 * -M 7.6 *
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Basin Index (%) 120 107
POWDER RIVER
BEAR TRAP MEADOW 8200 4.6 2.5 184 5.4 4.2 129
CLOUD PEAK RESERVOIR 9860 7.6 6.2 123 8.0 6.2 129
GRAVE SPRINGS 8550 5.1 3.3 155 6.1 5.1 120
HANSEN SAWMILL 8360 4.1 3.0 137 5.8 4.0 145
MIDDLE POWDER 7760 7.0 4.9 143 6.8 6.0 113
POWDER RIVER PASS 9480 6.0 4.7 128 6.2 5.9 105
SOLDIER PARK 8720 3.6 -M * 5.5 -M *
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Basin Index (%) 140 122
TONGUE RIVER
BIG GOOSE 7990 4.4 3.6 122 6.6 5.3 125
BONE SPRINGS DIV 9350 8.1 7.2 112 6.6 7.1 93
BURGESS JUNCTION 7880 5.7 4.7 121 7.0 5.8 121
DOME LAKE 8880 3.8 5.4 70 5.3 6.7 79
LITTLE GOOSE 8870 -M -M * -M -M *
SUCKER CREEK 8880 7.4 5.1 145 8.3 6.7 124
TIE CREEK 6870 2.6 2.0 130 6.9 5.5 125
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Basin Index (%) 114 110
BELLE FOURCHE
COLE CANYON 5910 3.3 2.2 150 9.2 4.6 200
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Basin Index (%) 150 200
CHEYENNE RIVER BASIN
BLIND PARK 6890 4.4 3.2 138 10.4 6.0 173
NORTH RAPID CREEK 6130 4.6 3.2 144 10.0 5.0 200
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Basin Index (%) 141 185
UPPER N. PLATTE
ARAPAHO RIDGE 10960 9.8 9.3 105 9.9 10.8 92
BLACKHALL MTN 9820 13.0 -M * 14.4 -M *
COLUMBINE 9160 9.2 8.7 106 11.8 11.4 104
DIVIDE PEAK 8880 7.5 8.4 89 11.2 10.3 109
JOE WRIGHT 10120 7.1 9.4 76 11.7 12.0 98
LAPRELE CREEK 8375 2.9 3.9 74 5.1 5.9 86
MED BOW 10500 11.6 -M * 14.8 -M *
NORTH FRENCH CREEK 10130 13.0 11.5 113 14.5 12.0 121
NEVER SUMMER 10280 8.9 8.6 103 8.3 -M *
OLD BATTLE 10000 12.8 12.4 103 14.9 16.2 92
RAWAH 9020 5.5 4.3 128 8.3 7.3 114
SAGE CREEK BASIN 7850 4.5 5.7 79 6.4 7.4 86
SAND LAKE 10050 12.0 11.6 103 12.3 11.1 111
SOUTH BRUSH CREEK 8440 5.7 4.7 121 8.2 7.1 115
TOWER 10500 16.8 18.5 91 18.7 18.2 103
WEBBER SPRINGS 9250 8.7 9.4 93 11.2 12.4 90
WILLOW CREEK PASS 9540 6.3 5.4 117 7.2 6.5 111
ZIRKEL 9340 10.7 9.8 109 13.9 13.5 103
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Basin Index (%) 100 102
SWEETWATER
DEER PARK 9700 5.2 6.6 79 6.9 8.7 79
LARSEN CREEK 9000 2.2 -M * 5.0 -M *
SOUTH PASS 9040 5.7 6.6 86 5.9 8.2 72
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Basin Index (%) 83 76
LOWER N. PLATTE
CASPER MTN. 7900 8.9 5.8 153 8.7 7.4 118
LAPRELE CREEK 8375 2.9 3.9 74 5.1 5.9 86
RENO HILL 8400 8.5 5.7 149 10.5 7.0 150
WINDY PEAK 7900 2.6 3.1 84 5.2 5.1 102
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Basin Index (%) 124 116
LARAMIE RIVER
BROOKLYN LAKE 10240 8.7 7.8 112 9.3 9.2 101
CINNABAR PARK 9574 8.6 8.9 97 10.8 11.4 95
CROW CREEK 8330 2.8 4.4 64 5.2 5.4 96
DEADMAN HILL 10220 8.9 7.2 124 9.4 7.7 122
RAWAH 9020 5.5 4.3 128 8.3 7.3 114
ROACH 9700 7.2 6.9 104 9.5 8.9 107
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Basin Index (%) 106 105
S. PLATTE
BLACK MOUNTAIN 8920 4.9 -M * 6.2 -M *
CROW CREEK 8330 2.8 4.4 64 5.2 5.4 96
DEADMAN HILL 10220 8.9 7.2 124 9.4 7.7 122
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Basin Index (%) 101 111
LITTLE SNAKE RIVER
BATTLE MOUNTAIN 7440 5.0 4.0 125 9.0 6.9 130
DIVIDE PEAK 8880 7.5 8.4 89 11.2 10.3 109
ELK RIVER 8700 7.8 6.6 118 10.4 9.0 116
LITTLE SNAKE RIVER 8915 9.8 8.9 110 15.1 14.6 103
OLD BATTLE 10000 12.8 12.4 103 14.9 16.2 92
SAGE CREEK BASIN 7850 4.5 5.7 79 6.4 7.4 86
SANDSTONE RS 8150 4.7 4.3 109 8.9 8.4 106
WHISKEY PARK 8950 13.3 9.4 141 15.8 12.0 132
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Basin Index (%) 110 108
UPPER GREEN RIVER
BIG SANDY OPENING 9080 4.7 5.8 81 4.7 6.2 76
BLIND BULL SUM 8650 10.0 9.0 111 8.4 9.2 91
EAST RIM DIVIDE 7930 5.3 4.3 123 5.2 5.4 96
ELKHART PARK G.S. 9400 5.9 5.7 104 6.1 6.3 97
GROS VENTRE SUMMIT 8750 6.3 6.1 103 5.9 6.1 97
GUNSIGHT PASS 9820 7.3 6.0 122 7.2 6.4 112
KENDALL R.S. 7740 5.6 4.8 117 6.7 6.5 103
LOOMIS PARK 8240 6.2 6.5 95 7.5 8.0 94
NEW FORK LAKE 8340 4.4 4.5 98 4.4 5.1 86
POCKET CREEK 9360 4.6 -M * 4.5 -M *
SNIDER BASIN 8060 5.0 5.1 98 5.8 6.5 89
SPRING CREEK DIVIDE 9000 9.0 10.0 90 9.5 10.7 89
TRIPLE PEAK 8500 8.1 8.2 99 9.9 10.9 91
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Basin Index (%) 102 93
LOWER GREEN RIVER
BLACKS FORK JCT 8870 2.2 -M * 5.1 -M *
BUCK PASTURE 9700 4.1 -M * 6.7 -M *
EF BLACKS FORK GS 9360 1.7 -M * 4.4 -M *
HAMS FORK 7840 2.9 4.5 64 4.9 5.1 96
HEWINTA 9519 2.4 3.7 65 5.4 6.4 84
HICKERSON PARK 9145 3.7 2.8 132 5.2 4.9 106
HOLE-IN-ROCK 9150 2.7 2.9 93 4.8 4.6 104
INDIAN CREEK 9425 7.7 10.0 77 7.8 9.8 80
KELLEY R.S. 8180 5.0 6.1 82 6.9 8.3 83
SPIRIT LK 10235 4.8 -M * 7.5 -M *
STEEL CREEK PARK 10200 5.3 6.2 85 6.7 7.4 91
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Basin Index (%) 82 90
UPPER BEAR RIVER
BEAR RIVER RS 8777 2.8 -M * 5.4 -M *
BUG LAKE 7950 5.6 6.2 90 6.6 8.9 74
BURTS MILLER RANCH 8000 2.6 -M * 3.2 -M *
CHALK CREEK #1 8993 8.1 9.6 84 9.5 11.4 83
HAYDEN FORK 9212 4.2 5.8 72 7.7 9.5 81
KELLEY R.S. 8180 5.0 6.1 82 6.9 8.3 83
LILY LAKE 9156 4.4 5.1 86 7.0 7.9 89
MONTE CRISTO 8960 7.7 10.0 77 8.5 11.6 73
SALT RIVER SUMMIT 7760 4.8 4.8 100 6.7 7.4 91
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Basin Index (%) 84 81
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.
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-M = Missing data
* = Data may not provide a valid measure of conditions.
Units = inches for the Current and Normal Snow Water Equivalent and
Total Precipitation values
If the Basin Index (%) value is flagged as potentially
invalid, care should be taken to evaluate if the value is representative
of conditions in the basin.
The SNOW WATER EQUIVALENT Percent of Median represents the snow water
equivalent found at selected SNOTEL sites in or near the basin compared to
the Median value for those sites on this day.
The TOTAL PRECIPITATION Percent of Average represents the total precipitation
(beginning October 1st) found at selected SNOTEL sites in or near the basin
compared to the Average value for those sites on this day.
Contact your state water supply staff for assistance.
Medians and averages are calculated for the period 1981-2010.
Provisional data, subject to revision.
* Site -- Either: (a) the current value is missing; (b) the median or
average for the day is not available or is zero; or (c) for snow water
equivalent, the median for the day is less than 10% of the maximum
median value for the year.
* Basin - More than half of the sites within the basin are flagged with *,
preventing the calculation of a meaningful basin index.
The basin index is calculated as the sum of the valid current values
divided by the sum of the corresponding medians (for snow water equivalent)
or averages (for precipitation) and the resulting fraction multiplied by 100.